Cтатистичні дослідження закономірностей зміни опору ізоляції мереж оперативного постійного струму гідроелектростанцій

Abstract

The possibility of establishing patterns of change in the insulation resistance of the operative dc hydroelectric power. Established that the most common type of violations in these networks is the closure of one pole to the ground. The existing methods and of general network control isolation, and certainly restrict their use. Definitely analytical dependence probability decreases the insulation resistance of the operative dc Hydropower of controlled parameters and based dependency probability correct prediction of drag reduction Pole to 20 ohms depending on the size of the previous short­term reduction of resistance. A use established depending Stay predicting reductions in insulation resistance to actuation setpoint control device isolation , enabling operational staff to power plants, electric power systems and electrical grids businesses to take action on elimination of places with potentially unreliable insulation will increase the reliability of relay protection and automation . The method of selecting the optimal values of diagnostic parameters for devices of general network control isolation of the operative DC.